M69030 Asiliant Technologies, M69030 Datasheet - Page 274
M69030
Manufacturer Part Number
M69030
Description
Manufacturer
Asiliant Technologies
Datasheet
1.M69030.pdf
(387 pages)
Specifications of M69030
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Operating Temperature (max)
70C
Rad Hardened
No
Lead Free Status / Rohs Status
Supplier Unconfirmed
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Quantity
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CHIPS
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FR40
read/write at I/O address 3D1h with index at I/O address 3D0h set to 40h
shadowed only for pipeline A
Note: This register is used in FP mode (FR01 Bit 1 set to 1)
7-6
5
4-3
`efmp
A
B
Reserved (R/W)
FP Enable Graphics Horizontal Compensation (EGHC)
Text Horizontal Compensation Priority (THCP)
69030 Databook
7
Reserved
Horizontal Compensation Register
(00)
0: Disable graphics mode horizontal compensation.
1: Enable graphics mode horizontal compensation which consists of horizontal stretching
and FR41 is used to specify stretching for different horizontal resolutions.
This bit is effective only when bit 0 is 1.
These bits are effective only when bit 0 is 1 and bit 2 is 1. These bits determine the text
mode compression/stretching method to be applied if horizontal panel size is wide enough.
If after applying the specified text compression/stretching, the horizontal panel size is still
wider than the stretched image then further stretching will be applied using the same
algorithm used for horizontal graphics compensation.
Bits
4 3
0 0
0 1
1 0
1 1
6
Allow 9-dot compression to 8-dot if needed. If horizontal panel
size is wide enough, 8-dot text remains 8-dot text and 9-dot
text remains 9-dot text. If horizontal panel size is not wide
enough, then 8-dot text remains 8-dot text and 9-dot text is
forced to 8-dot text. This is the default after reset.
No compression or expansion. 8-dot text remains 8-dot text
and 9-dot text remains as 9-dot text regardless of horizontal
panel size.
Allow 8-dot expansion to 9-dot, or 9-dot compression to 8-dot,
depending on horizontal panel size. If horizontal panel size is
wide enough, 8-dot text is forced to 9-dot text and 9-dot text
remains 9-dot text. If horizontal panel size is not wide enough
then 8-dot text remains 8-dot text and 9-dot text is forced to 8-
dot text.
Allow 8-dot and 9-dot expansion to 10-dot, or 8-dot expansion
to 9-dot, or 9-dot compression to 8-dot, depending on
horizontal panel size. If horizontal panel size is wide enough,
8-dot text is forced to 10-dot text and 9-dot text is forced to 10-
dot text. Otherwise, if horizontal panel size is wide enough,
8-dot text is forced to 9-dot text and 9-dot text remains 9-dot
text. If horizontal panel size is not wide enough, then 8-dot
text remains 8-dot text and 9-dot text is forced to 8-dot text.
EGHC
Text Horizontal Compensation Priority (THCP)
(0)
5
not shadowed for this pipeline
Flat Panel Registers
4
THCP
(0:0)
3
ETHC
(0)
2
Revision 1.3 11/24/99
EHC
(0)
1
EHCP
(0)
0
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